A 35-acre site developed with residential blocks set on a raised podium and constructed between 1965 and 1976. The residential estate consists of 13 terrace blocks grouped around the lake and green squares. The main buildings rise, for up to seven floors, above a podium level, which links all the facilities in the Barbican, providing a pedestrian route, above street level. Some maisonettes are built into the podium structure. The estate also contains three of London's tallest residential towers, at 42 storeys and 123 metres/403 feet high. The top two floors comprise one penthouse flat. The towers are Cromwell Tower, Shakespeare Tower and Lauderdale Tower.